Finding a Building Plot

Introduction

Start with the land

Finding the right plot is the hardest part of many self-build journeys — and the most important.

The land shapes what you can build, what it costs and whether the project is even possible. This guide will help you search well and assess a plot with your eyes open. It's written for England; the other UK nations differ in the detail.

Where to look

The obvious places

• Estate agents — ask to be told about land, not just houses.
• Plot-finding websites and portals, and property auctions.
• Your council's Self-Build and Custom Housebuilding Register, and brownfield land registers.

Where else to look

The less obvious places

• Large gardens with room to divide (garden plots).
• Redundant buildings, barns and infill gaps between houses.
• Back-land behind existing homes, and under-used corner sites.
• Walking or driving your target area — and, where it feels right, writing to a landowner.

Can you build on it?

Check before you commit

A plot that already has planning permission — outline or full — is lower risk. Land without it is cheaper, but uncertain. Check the planning history and your council's Local Plan, and on an unconsented plot, consider pre-application advice from the council before you buy.

Rural sites

Plots in the open countryside

A field on the edge of a village can look like the perfect plot, but land outside a village's settlement boundary is treated as open countryside, and national and local policy generally resists new homes there. It is usually priced as farmland for a reason.

There are exceptions, and they are narrow:

• A home for a rural worker who genuinely needs to live on site, such as on a working farm.
• Converting an existing building, such as a redundant barn, either with a full application or, for some agricultural buildings, under permitted development (known as Class Q).
• Replacing an existing house, normally at a similar size.
• A home of truly outstanding design that raises standards in rural areas and suits its setting. The bar is deliberately high, and few schemes clear it.
• Infill in a small gap within an otherwise built-up frontage, where the council's Local Plan allows it.

Whether a site counts as "isolated", and where the boundary is drawn, varies from council to council, so check the Local Plan and nearby decisions. On a countryside site, pre-application advice before you buy is money well spent.

Assessing suitability

What to look at on the ground

• Access — a legal, usable way in and out.
• Services — water, drainage, power and broadband; connections can be surprisingly costly.
• Ground and levels — slopes, made-up ground and poor soils all add cost.
• Flood risk, trees (which may be protected), orientation and neighbours.

Fast facts

For self-builders in England

Hover over or tap a card for more detail.

Self-build register

Councils must keep one and permission enough plots to meet demand — join it.

Every council in England must keep a register of people who want to build their own home, and grant enough suitable planning permissions to meet that demand. Joining is free. It shows there's demand in your area, some councils share plot opportunities with people on it, and it can help support a self-build planning application.

CIL & VAT relief

Self-builders can claim a CIL exemption and reclaim VAT on a new home.

The Community Infrastructure Levy is a charge some councils make on new homes, and it can run to tens of thousands of pounds. Self-builders can apply for an exemption, but it must be claimed and approved before work starts, and you must then live in the home for three years after it's finished. VAT on materials can be reclaimed through HMRC's DIY Housebuilders Scheme.

Check flood risk

The Environment Agency flood map — Flood Zone 1 is the lowest risk.

The Environment Agency's online flood map shows which zone a site falls in. Zone 1 is low risk; Zones 2 and 3 carry more risk, usually need a flood risk assessment, and can affect insurance and mortgage costs. Check surface water flooding too: it's shown on a separate map and catches many people out.

Mind the drains

Off-mains drainage (septic tank or treatment plant) adds cost and rules.

If there's no public sewer nearby, you'll need your own treatment plant or, in some cases, a septic tank. These cost money to install and maintain, need space and suitable ground, and must meet the Environment Agency's rules on where treated water can go. Check early whether a connection to the main sewer is possible, and at what cost.

The legal small print

Involve a solicitor early

Title and boundaries, restrictive covenants, easements and rights of way, ransom strips, and overage or 'clawback' clauses can all affect what you can do — or what you'll pay later. Check whether services have to cross someone else's land.

Overage (or clawback)

Plots sold by farmers, councils, developers and estates often come with an overage clause. It gives the seller a share of any later rise in value, typically if you gain permission for more homes or a larger house, or sell within a set period. These clauses can last for decades and take a significant share of the gain, often a quarter to a half. Ask your solicitor to confirm what triggers it, how long it lasts and how the payment is worked out before you exchange. It can sometimes be negotiated, capped or bought out.

This guide is general information for projects in England and is not legal, planning or design advice. Every site is different — always check current rules with the relevant authority, or ask us.